Powerplant with auxiliary compressor kept in operation in full-power phase

A technology that assists compressors and powertrains. It is applied in the direction of machines/engines, mechanical equipment, engine components, etc. It can solve the problems of reducing the pressure drop of the intake pipe without pointing out, and achieve the effect of reducing the pressure drop.

CN110998085AActive Publication Date: 2020-04-10PEZHO SITROEN AUTOMOBILS SA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2020-04-10

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Abstract

The invention relates to a method for reducing a pressure drop in a combuustion engine air intake line (11) of a motor vehicle powerplant having a compressor (8) that forms part of a turbocharger andan auxiliary compressor (9) in the air intake line (11), the power unit operating in a supercharged phase of operation in which the turbocharger (4, 8) and the auxiliary compressor (9) are active whena demand for engine torque is emitted, the auxiliary compressor (9) being stopped or left operating at idle when a predetermined engine maximum power threshold is crossed, a flow of air along the intake line (11) then predominantly bypassing the auxiliary compressor (9). At the demand of the driver of the vehicle, the auxiliary compressor (9) is kept in operation when the predetermined thresholdis crossed, the flow of air along the intake line (11) being predominantly via the auxiliary compressor (9).
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Description

technical field

[0001] The present invention relates to a powertrain having an auxiliary compressor that keeps the auxiliary compressor running during the full power phase. The invention relates to motor vehicles and motor vehicles of gasoline or diesel type, which are equipped with a turbocharger and an auxiliary compressor. Background technique

[0002] like figure 1 As shown, it shows a supercharged type powertrain according to the prior art, the assembly comprising an engine 1 associated with a turbine 4 and a compressor 8 forming turbochargers 4 , 8 . In the exhaust duct 5, the turbine 4 is arranged downstream of the exhaust manifold 3 at the outlet of the engine 1, while in the intake duct 11 of the engine 1, the compressor 8 is arranged in the intake manifold 2 or at the outlet of the engine 1 Upstream of the intake distributor, a butterfly valve 6 is arranged upstream of the intake manifold 2 .

[0003] The turbine 4 includes a turbine wheel that at least partiall...

Examples

Embodiment Construction

[0043] It should be kept in mind that the drawings are given by way of example and not limitation of the invention. The drawings constitute schematic schematics to aid in the understanding of the invention and are not necessarily to scale for actual use. In particular, the dimensions shown for the various elements do not represent reality.

[0044] In the following, reference is made to all figures taken in combination. When reference is made to one or more specific figures, those figures should be used in conjunction with the other figures for identification of the assigned numerical reference numerals. In the following text, the terms upstream and downstream refer to the air flow in the intake duct passing from the air filter to the engine inlet.

[0045] refer again figure 1 , wherein some features will be repeated, but all other preferred features have been described in the background part of the application, the invention is applicable to a motor vehicle powertrain com...